Finding the Fourth Proportional to 2,428.82, 3,643.49 and 889.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.82 : 3,643.49 = 889.82 : x
2. Step 2: Convert to fraction form
   2,428.82/3,643.49 = 889.82/x
3. Step 3: Cross multiply
   2,428.82x = 3,643.49 × 889.82
4. Step 4: Simplify right side
   2,428.82x = 3,242,032.05
5. Step 5: Solve for x
   x = 3,242,032.05/2,428.82
6. Step 6: Final answer
   x = 1,334.82